Answer:
To determine the percent composition of a compound in terms of the numbers of atoms, we need to consider the ratio of the different elements present in the compound.
HCI stands for Hydrogen Chloride. It consists of one hydrogen atom (H) and one chlorine atom (Cl).
To calculate the percent composition of each element in HCI, we can use the following formula:
Percent composition = (Number of atoms of the element / Total number of atoms in the compound) x 100
For HCI:
Number of hydrogen atoms (H) = 1
Number of chlorine atoms (Cl) = 1
Total number of atoms in the compound = 1 (hydrogen) + 1 (chlorine) = 2
Percent composition of hydrogen in HCI = (1/2) x 100 = 50%
Percent composition of chlorine in HCI = (1/2) x 100 = 50%
Therefore, HCI has a percent composition of 50% hydrogen (H) and 50% chlorine (Cl) by numbers of atoms.